Pancreatic β-cell fate in subjects with COVID-19

Jun Shirakawa1

  • 1Laboratory of Diabetes and Metabolic Disorders, Institute for Molecular and Cellular Regulation (IMCR), Gunma University, Maebashi, Japan.

Insights

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may directly infect insulin-producing beta-cells. Understanding this interaction is crucial for developing new diabetes therapies.

Area of Science:

  • Endocrinology
  • Virology
  • Immunology

Background:

  • Recent reports indicate SARS-CoV-2 (the virus causing COVID-19) has the potential to directly infect pancreatic beta-cells.
  • The fate of beta-cells under COVID-19 infection is a significant concern for metabolic health.

Purpose of the Study:

  • To explore the direct impact of SARS-CoV-2 on beta-cell function and survival.
  • To investigate the implications of SARS-CoV-2 beta-cell tropism for diabetes development and management.

Main Methods:

  • Review of existing literature on SARS-CoV-2 infection pathways.
  • Analysis of clinical and experimental data regarding COVID-19 and diabetes.

Main Results:

  • Evidence suggests SARS-CoV-2 can infect beta-cells, potentially leading to dysfunction or death.
  • COVID-19 may exacerbate or trigger diabetes in susceptible individuals.

Conclusions:

  • The direct infection of beta-cells by SARS-CoV-2 presents a novel challenge in managing COVID-19.
  • Further research into SARS-CoV-2-beta-cell interactions is essential for advancing therapeutic strategies for diabetes.

Related Concept Videos

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
1.6K
Insulin Secretory Vesicles01:05

Insulin Secretory Vesicles

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
6.0K
Carbohydrate Metabolism01:36

Carbohydrate Metabolism

Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
12.6K
Cells and Secretions of the Pancreas01:16

Cells and Secretions of the Pancreas

The pancreas, a vital organ within the abdominal cavity, plays dual roles in the digestive and endocrine systems, collaborating with exocrine and endocrine cells to maintain optimal digestion and blood sugar levels.
Exocrine function is carried out by acinar cells, organized into clusters known as acini. These cells contribute to digestion by releasing substantial quantities of enzyme-rich, alkaline digestive juices.
Concurrently, the dispersed clusters of endocrine cells throughout the...
3.3K